1. 1.21" x 0.55" x 0.46"
2. 1.44" x 0.56" x 0.37"
4. 089" x 0.85" x 0.48"
6. 1.66" x 0.48" x 0.33" ~ phantoms
8. 1.17" x 0.55" x 0.44"
12. 1.03" x 0.69" x 0.56"
Citrine is a silicon dioxide mineral, a member of the Quartz group with a hardness of 7. Its crystal system is trigonal, and its yellow pigmentation is derived from iron. It varies in shade from very pale yellow to a deep amber, nearly orange, with some specimens exhibiting brownish tinges.
Much of the commercial Citrine on the market is heat-treated Amethyst. In general, the deeper amber and orangish shades are heat treated. Natural Citrines are mostly a pale-yellow color. Deposits of natural Citrine have been found in Brazil, Africa, Madagascar, Spain, Russia, France, Scotland, and the USA.